Technical data

5 Troubleshooting Guide
54 N1911A/1912A P-Series Power Meters Service Guide
Extended Self-Test
Instrument Purpose Debug Tips Possible Faults
Keyboard Verifies the operation of every
key (apart from the power
button)
Not applicable Front panel (defective
keymat or key flex circuit)
Bitmap display Verifies that all pixels in the
display can be illuminated
in various colors
Not applicable Front panel (defective
display, display interface
board, or inverter board)
Time base Provides a means to measure
time base frequency accuracy
Check that the BNC cable
being used is not damaged
Check that the BNC is
connected to ‘Trig Out’, not
‘Trig In’
Main Board